A/N: the song used is Shatter (Curse of Pinkamina) by Psychgoth.
Shattered
The five ponies walked into the Everfree Forest and up to the dark black and blue alicorn who was waiting for them. "Hello Twilight and friends, we have been expecting you but we didn't want to act on the pink one's behavior until we were sure it was affecting her externally. We were waiting to see if they would go away."
"Princess?" Twilight said confused.
"Her dreams of course," The princess of the night began to circle around the five, "Pinkie Pie has been suffering from the worst nightmares we have seen since our banishment from the moon." There was looks of shock on everypony's face. "Now, as you know it is our duty to watch over the dreams of the many ponies of Equestria and maybe help them if these dreams become repetitive, so-"
"Wait you, you can see our dreams?" Fluttershy asked darting her eyes everywhere in a mini painic.
Princess Luna smile at the timid mare and bent closer to her, "Do not worry, we never reveal the dreams of others." She said calmly (thanks to her vocal lessons) "Unless!" she said shooting her head up and away from Fluttershy, "The dreams become too horrible that we cannot help this pony alone. We have tried helping Pinkie but her subconscious is too… unpredictable to get a hold of. This is why we need your help my little ponies, if you want to save your friend from falling into insanity." Collective gasps filled the air. "Yes we have seen this before, once before our banishment there was a stallion who had terrible nightmares not too different from Pinkie's. They were too violent for us to handle, so we could not help him and he soon drifted into insanity and began hurting many others." The five had their mouths ajar in shock and eyes watering in fear for their friend.
"But princess, if you can't get a hold on her then how do you expect us to?" Twilight asked.
"We cannot get a hold of her through her mind, but perhaps you could get a hold of her externally and allow her to confide in you. If you truly are the friends my sister boasts about then we believe it is possible." The ponies nodded in determination. "Now the images we are about to show you will be very frightening and gruesome indeed, you will see a side of your friend that you did not know existed, one that remains locked away inside of her. There will be lines crossed and blood shed, anypony can choose not to see the dreams if she wishes." Everypony looked at Fluttershy, "Except Fluttershy because we believe she will be vital to helping us in analyzing these dreams." Fluttershy lowered her head in fear. "I do think that Rainbow Dash and Twilight should not go, especially in Rainbow Dash's case."
"Me!?" Rainbow Dash asked offended.
"With all due respect I believe Pinkie Pie is our friend and we WILL do whatever is possible to help her." Twilight said a little harsher than she intended.
"Yeah!" Rainbow added.
Luna sighed, "We did not mean to offend, we just wanted to warn you two especially."
"Why?" Twilight asked.
"We presume it might be easier to show you." Luna faced her head down and pointed her horn to the five ponies and soon she was gone leaving the five in a dark empty room that started playing a song.
Like anypony could have guessed Pinkie Pie has songs playing in her head, but this song was nothing the cheerful, upbeat pony they thought they knew has ever sung. This tune had more of a dark vibe to it. The first thing the ponies seem to notice are the cages hanging from the infinite ceiling. There were ponies in these cages but they couldn't tell who. There was blood on the floor, Fluttershy got scared and started to fly up but as soon as she did, she saw the multiple pony heads hung on the wall and dropped back down in fright. There was the head, or what was left of it, of Gilda along with Lyra and Bon Bon and some other pony. For some it was hard to tell who it was due to missing skin, too much blood covering or gauged out eyeballs.
The next few scenes came as flashes, a flat hair Pinkie Pie literally came out from know where and lunged towards them.
You Pinkie Promised!
Waaaaaaaah!
There were more image flashes that moved slightly but it was too quick to be able to tell much of what was going on. The five ponies huddled closer together and Fluttershy hid underneath Rainbow Dash but didn't dare look away from the images. An image of a dirty, messy-haired, beaten Rarity inside of the hanging cages, then one of Applejack in another cage, then Fluttershy, then an empty one that had a broken hole on the bottom, then another empty one broken on the side. The image changed to some rainbow frosted cupcakes thrown onto the ground, then one of a pony who was tied sideways to the wall with a muzzle strapped to her snout and was hanging inches above the ground by a chain that came down her chest, underneath her belly and up between her legs. The images repeated at a faster pace.
A poofy-haired Pinkie Pie began singing.
This may look like fun may look like fun
This may look like fun may look like fun
An image flash occurred and the singing Pinkie Pie went from smiling and poofy-haired to an angry faced straight-hair Pinkie Pie.
Oh-oh no! oh fun Oh-oh no! oh fun
Some p-pony ee look like fun!
A flash of Pinkie with a sewn together dress made of different designs and multiple colored wings was there and gone so fast it was hard to catch. Then and image of the flat-haired Pinkie began dragging a resisting Twilight by yanking her mane with her mouth.
Twi might ee might p-look my!
Ee look my best look my no fun
Twilight almost escaped but was scooped up by a poofy-haired Pinkie and squeezed into a hug.
Twilight is my best-est friend whoopee
Pony oh-ny -y-y-y
The image repeated of the poofy-haired Pinkie singing.
This may look like fun may look like fun
This may look like fun may look like fun
The repeated image of the poofy-haired Pinkie flashed and went straight-haired.
Oh-oh no! oh fun Oh-oh no! oh fun
Some p-pony ee look like fun!
The dressed up pony flashed again and it seemed clear now, the designs looked like cutie mark and she looked like she had unicorn horns around her neck. The Twilight being dragged now was not showing any resistance, or moving at all, Pinkie was dragging dead weight.
Twi might ee might p-look my!
Ee look my best look my no fun
Twilight is my best-est friend whoopee
Pony oh-ny -y-y-y
The imaged changed to a moving Twilight inside her unbroken cage and Pinkie looking up at her from below, Twilight looked at her then at the empty cage at the side of her with the broken bottom and panicked. Pinkie jumped up to the cage with incredible height and grabbed on to the side of the cage, pried it open with great strength and began reaching in for Twilight.
You! You! Kie!
No-oh No-oh!
You! You! Kie!
Twilight tried to back herself into the cage so Pinkie couldn't get her.
No-oh No-oh!
You! You! Kie!
No-oh No-oh!
Pinkie finally got a hold of Twilight and pulled her close.
Twilight is my bestest friend whoopee!
Pinkie began tying Twilight to the wall.
You Pinkie Pinkie!
Oh-oh no oh!
She wrapped the chain underneath her and pulled it so she would rise off the ground.
You Pinkie Pinkie!
Oh-oh no oh!
Then Pinkie put a muzzle on her.
Somepony may do ee whoopee!
You Pinkie Pinkie promised!
Pinkie was now wearing the outfit with the sewed together cutie marks, wings and, unicorn horn necklace. She had a bloody knife in her mouth and a rainbow cupcake in her hoof. Her hair was poofy and she began singing.
This may look like fun may look like fun
This may look like fun may look like fun
Her hair deflated and she got and evil look and walked towards a table.
Oh-oh no! oh fun Oh-oh no! oh fun
Rainbow Dash was tied to it, looking extremely scared. Pinkie held up a hacksaw and sang.
Some p-pony ee look like fun!
Twi might ee might p-look my!
Ee look my best look my no fun
Twilight is my best-est friend whoopee
Pony oh-ny -y-y-y
She drove the hacksaw down, but before it hit Rainbow the scene repeated.
This may look like fun may look like fun
This may look like fun may look like fun
Her hair went from poofy to deflated in a flash and she got and evil look and walked towards the table.
Oh-oh no! oh fun Oh-oh no! oh fun
Some p-pony ee look like fun!
Twi might ee might p-look my!
Ee look my best look my no fun
She got an angry look on her face and raised the hacksaw.
Twilight is my best-est friend whoopee
Pony oh-ny -y-y-y
She drove the hacksaw down and chopped Rainbow's wing, but not completely off.
You! You! Kie!
No-oh No-oh!
She began to hack at her wing.
You! You! Kie!
No-oh No-oh!
She became impatient and tore it off.
You! You! Kie!
No-oh No-oh!
She held both of Rainbow Dash's detached wings in her hand, looked down at the crying Rainbow and sang:
Twilight is my bestest friend whoopee!
Pinkie took a power saw and opened up Rainbow's belly.
You Pinkie Pinkie!
Oh-oh no oh!
She began going through and ripping out her intestines
You Pinkie Pinkie!
Oh-oh no oh!
The scene changed to where Pinkie was making cupcakes.
Somepony may do ee whoopee!
You Pinkie Pinkie promised!
The next few images were very random and may have been memories.
Okie dokie lokie oh-oh-oh!
Poofy-haired pinkie was looking at flat-haired Pinkie, whose eye pupils were beginning to separate.
Are you crazy? Do something!
It's fun like-like-like-like fun it's like-like cute!
A flat-haired pinkie screamed, and then a poofy-haired Pinkie hugged Twilight.
Promised! Oh no Twilight best friend!
Okie dokie lokie oh-oh-oh!
Are you crazy? Do something!
A dressed up Pinkie made cupcakes.
It's fun like-like-like-like fun it's like-like cute!
Promised! Oh no Twilight best friend!
More random Pinkie images flashed onto the screen including: a stuffed Rainbow Dash, the beaten three mares left in their cages, Pinkie baking cupcakes, eating cupcakes, forcing her cupcakes down her caged friends' throats, Pinkie playing dolls with her severed heads, the body of the opened Rainbow Dash…
Okie dokie lokie oh-oh-oh!
Are you crazy? Do something!
It's fun like-like-like-like fun it's like-like cute!
Promised! Oh no Twilight best friend!
Okie dokie lokie oh-oh-oh!
Are you crazy?
Okie dokie lokie oh-oh-oh!
Are you crazy? Do something!
It's fun like-like-like-like fun it's like-like cute!
Promised! Oh no Twilight best friend!
Okie dokie lokie oh-oh-oh!
Are you crazy? Do something!
It's fun like-like-like-like fun it's like-like cute!
Promised! Oh no Twilight best friend! (Honey)
The scene ended with the tied up Twilight on the wall. Then the five traumatized ponies were pushed out of the dream.